lol you must have never play a 3d fighter. 3d games is more about taking turns/baiting and frame trapping than zoning. also sf4 combos are very easy in case you dont notice already. i hate tekken but ttt2 is a very technical game.
umvc3 is strategically a much harder game than sf4 and kof, since one mistake in neutral can cost you the game and there is way more match up/situation to know. and as easy as the game is there are far harder combo that is required than anything sf4 has, plus proper movement is far harder to achieve in this game than other games since its required consistently to play past scrub level.
mk and injustice doesnt even play like the capcom games and require a different skill set. smash all about footsies, it might have no combos, but movement and space control isnt easy.
combos does not determine how hard a fighting game is. and there is no 80% combo in sfxt because of damage scaling.
every game requires a different skill, but i guess calling it sf and getting a random knock down to vortex the other guy to death means more skills to some people. newer games in general is toned down for beginers, just like sf4 is a super watered down version of st with every character having no bs option, umvc3 has xfactor and moves with a lot of dodgy hitboxes and property, even persona and blazblue is a toned down version of gg. the few new games closest to a old games are ttt2, vf5 and kof13.