I do not think we can tell about the best super hero,it is very uncertain.
i think it only can be set by the situation so in some cases one is best than the other.
the lotus is great threat and can harm your base in very short time but by using simple deffense against her makes her very very useless,USA deffends very well against Lotus because you can even set a detector over any US unit,or even use snipers ,now she is zero use.
while Jermel and Borton have some attacking styles,they can kill the lotus if they see her and the can climb and even if they got detected they still can do something especilay the jermel who can kill the detector's driver and go invisible again (Jerm can hide in buidlings without the building turns color,see it),Jerm has very high attacking capabilites sicialy against overlords.
Borton is good but slow attacker and bomber,Borton can be used against any buildings out side your opponent's base ,use cliffs to reach high areas.
so who is the best?....taking tactics and attacks..Lotus has no attack but high tactics.
Jerm has both medium attack and tactics so jerm has higher use...so Jerm could be a better hero.