It is not easy to jugde accurately after 500 years but from various other facts, we can surely come at a conclusion that Maharana Pratap would won the battle if fought individually with Mughal Emperor Akbar.
1. Bravery From Childhood:
Rana Pratap was brave from childhood and had won many wars front to front for Mewar with Afgans and other rajput rebellions.
War with Shams Khan (Chieftain of Suri Dynasty of Delhi) for freedom of Chittod was done by Rana Udai Singh father of Pratap in which Pratap shown extreme valor and defeated Afgans when he was merely 15 years.
Other wars with Bundi, Doongerpur, Ajmer, Marwad also led by Pratap on behalf of Mewad to supress opponents.
He was said to be so much physically strong that he had taken a famous sword of Rana Sanga his grandfather into his one hand when he was a child. This sword was so much weighted that it could not be taken into hands by 4 normal people combinely.
On contrary Akbar as a child was very much aggressive and we find about his runnerup only in history. He could travel Madhura to Agra Fort about 60 kms in few hours which was surprising to his chieftains. Apart from this no other record for battles on alone by akbar as child could found. All his battles were played by him under supervision of 'Bairahm Khan'.
2. Physical Streangth:
If we talk about physical strength height of Maharana is 7.5 feet, total weight of his two swords 50 kgs, weight of his spear is 80 kgs and with other including war wearings totaled about 208 kgs he used to do war whole day; we can imagine his power. He could smach metal coin mere by two fingers. This all details can be seen in Udaipur museum.
No such record for Akbar.
3. Practical Experience of Mahrana's power by Mughals:
In battle of Haldighati, it might be first time for Mughals to experience and see Physical strength. In this battle in 1576, Maharana Pratap sliced the Bahlol Khan major chieftain of Mughal empire into two pieces from head to legs alongwith his horse in one stroke.
According to one view, Bahlol Khan attacked from backside of Mahrana Pratap so it was very powerful stroke by Rana Pratap on his backside. Nevertheless we cannot imagine such strength today also.
No such accounts for Akbar the great.
4. Event that changes Haldighati Result:
In battlefield, Maharana Pratap was searching leader of Mughal force Mansingh of Amer a commander in chief of Mughal Empire. He believes that if Mansingh was killed, battle result will be in favour of Mewad. Mahana Pratap got one opportunity of it when he saw Mansingh infront of him. He led himself alone on Mansingh. After killing all of guards of Mansingh he throw his spear towards Mansingh but that time only Mansing put his rider of elephant ("mahout") infront of him so in this way Mansingh survived. But Rana Pratap had thrown spear in such a powerful manner that it destroyed royal mughal roof of Mansingh and he collapsed down.
Mansingh was enjured and had to go backside for some time and here the time where Mughal soldiers commonly attacked Rana Pratap.
5. Importance in Enemy:
Knowing strength of Mewad and Mahrana Pratap, Akbar, on suggestionof Rahim Khan requested Pratap for alignment with Mughals and for that he offered power of half of Hindusthan at that time. But Pratap being confident on his strength of muscles refuged the same. ( This will surely make anyone in thinking that why one should sacrify his right on such a large kingdom).
6. Spiritual Aspects:.
At some point of time one spiritual leader had told Akbar that to keep away himself from facing Rana Pratap directly since if both would have come front to front for war Akbar was defeated. Akbar was very much scared about his future. This was known to Akbar after Chittod fall. That's why he didn't come in front of Maharana in any of battles afterwards even after haldighati to suppress Pratap he had send 6 military campaigns consisting not less than 2,00,000 soldiers each time. (The strength of military campaigns prove that Akbar did not want to take chance against Pratap's army of not more than 25000 in numbers
15th October, 1577: Bhagwabdas, Mansing alongwith Sayed Hashim, Sayed Kashim, Shahbazz Khan etc
3rd April, 1578: Shabaz Khan alongwith Kazi Khan Badkashi, Mansing, Bhagwandas etc.
October, 1579: Again Shbaz Khan (Third time attacked Mewad)and others
16th June, 1580: Rahim Khankhna (Ajmer) and others
December, 1584: Jagannath Kachwaah and others.
After disappointed from Shabaz Khan for third time, and other chieftains like Mansing, Bhagwandas etc. finally Akbar himself arrived in Mewad to supress Maharana Pratap. But after trying relentessly for 6 months even he could ot supress rana Pratap and finally returned to Agra in Agra.
Maharana Pratap afterwards recovered all his lost territories other than Chittod.
7. True Leader:
Pratap used to lead his military and Akbar camp was at last of battlefield to ran away.
In the battle of Panipat against Hemu, Bairahm Khan led Jalal Akbar away from battlefield at 8 miles towards way to Kabul for escaping in case of defeat.
In the battle of haldighati also Akbar was at Ajmer knowing importance of the battle he did not want to particiapte in battle.