Ver.2 to ep1&2......why did they....?

[K_I_R_E_E_K]

ok, there are thing i do not understand why did sonic team changed when they made ep1&2, i simply cannot find a reason for these questions.

1- the phonton % on the weapons on ver.2 go from -60% to 60%, on gc there are no negative % below -5%.........why?
if it is an extra or lower power, why can't weapons have a bad % against some enemys?

2-again the same problem, on todays rate quest on ver.2 you can add % to enemy body weapons, wich makes sense because it is an extra phonton boost, on gc such thing does not exist....why?

3- hit materials, why did they remove hit materials?

4- the one i hate the most, some of you do not know but on ver.2 (i will go only for ultimate) the sil dragon boss gives 6500 exp, the 2nd boss 7000exp, the 3rd one gives 7500exp and dark falz gives 9000exp, you may think this is unfair, at the beguining this exp is very low, but once you lvl up, find rares......this exp is FAIR, i do not understand why gc has bosses that give you amazing exp, for example ultimate dark falz online gives 50000exp, this exp is the same as ver.2 players beat caves1/2/3 + de la rie boss.
which do you think is fair?