VF and Tekken aren't that bad. The stigma with VF is that there's so many options and things to do, but you have to know the frames, and know the hit types (and flashes) to be able to figure out what to do. Whatever with that!!! I can say I'm a pretty decent Jeffry, and after not playing for awhile, I can still hold it down without necessarily knowing all of that. Even in FS Sega's making it easier so people don't really have to worry about frame counting, 'cause most cats don't sweat themselves crunching the numbers. You just know from your gut what to do and when. Simple.
The stigma with Tekken is "OMG I can't break throws". There's also the "there's so many characters and I have to know all block strings to counter properly". It's not that ridiculous imo. The more you play, the easier it gets. You don't have to carry a small notebook with all the character data to be a solid player. I remember at one point during the TTT days people were crying about not being able to chicken. Just like throw breaks, just practice that joint and get in there and apply it. It's not rocket science.
As for SC, it's easy to get into, but I still feel that it's deep just in a different way. Situational awareness is far more important in this game. There's no Korean Backdashing, Taiwan Stepping, but there's wavedashing for some. Range plays an important part of the game. Not too much zoning can be done in VF or Tekken, but it can be done in SC. Knowing options off of a successful parry based on the parry type plays a role also. It's not just a successful evade, or a successful low parry with 1-2 options or a 50% combo.
I didn't mean literally like Rocket Science, but it's far and away a lot more knowledge to take in than 2D fighters. Anybody who's anybody has told me the sheer amount of information you need in order to get good at VF and Tekken. (I'll sidestep on SC, because I will say I'm biased because I'm truly not a big fan of it and it's only gotten worse since 1.)
Now if you're pointing out 1-frame links and different jump types compared to Tekken and VF's demanding list of trails, you've got to be joking. It's really nothing compared to it. Most people shy away from Tekken and VF for a reason and it isn't just because of "OMG throws!1!" or something like that. They truly are way too technical for their own good. When I see Tekken players whip out notebooks full of frame data, when there's no such thing anywhere else, when top players can consistently mess up their characters combos because they're way too strict for their own good and the such, there is a problem. You say that it's something that comes with play, but that can be literally applied to EVERYTHING from chess, baseball, go, Fighter's History and you name it.
The fact is that both VF and TK are both brutal and unforgiving in high level play and there's a very real reason why they don't enjoy the same competitive community that SF, KOF and Marvel have, even though in Tekken's case it sells better than all those combined. You are literally the only person that has told me otherwise. I don't want to sound rude, but this stuff ain't no joke.