MODOK being the exception, you can play Viper, Hulk and Deadpool all the same. Ground series, launcher, air series, OTG, launcher, air series, etc etc.
All of the 2 infinites were 3-4 basic attacks stringed. All of these combos are 2 or 3 of the character super stringed together (in the case of Spiderman, just one) and most importantly, combos like this were Capcom's intention, not an unintended side effect of the engine. :P