I've played SFxTK in multiple sessions pre- and post- large patch. It's fun in the same way any fighting game is fun to pick up and fiddle around but there is a laundry list of things I dislike about that game that did not change after playing it. Not my point though, I'm not concerned with the specific details about balancing or any of that because I think it's completely irrelevant to the discussion and I'm scratching my head at why it "[a year later] its a good game doe" footnotes every post.
I already made this point above but I guess I'll be more clear:
I don't understand using corporate meddling as the scapegoat. I'm seeing blame and quality from the product itself relinquished to generally poor decision making as opposed to specifically the decisions made for SFxTK. Man, Capcom sure had some ass decision making at that time, right? No shit, that's a baseline.
So what decisions or titles had more bearing than others? Shitty Marvel contract is shitty Marvel contract, but they had a release plan akin to SF4 and a contract that was in place years before SFxTK became a thing considering MvC3s long dev cycle (assumption: I highly doubt SFxTK's was longer, so working story here is that SFxTK is brought into the picture afterwards), so that's not too bad, right? Tsunami happens, which as far as I can tell which was not a decision made by Capcom. Okay now our post-launch support has gone to shit, but we have all this content here that we can monetize. But now we're also making SFxTK, hmm. We have two games that are not ready for a full release, one of which has a more flexible release schedule (assumption considering TKxSF seems like it can come out between now and the second coming of Jesus), and one of which we know does not (UMvC3; common knowledge). And there the decision was made to release SFxTK in the following year and push UMvC3 up. UMvC3 is released to significant fanfare still, but no longer receives extended post-launch support because of the fallout and contraction of development, and the team is dissolved. SFxTK receives even greater backlash with lukewarm general reception, however it receives significantly more post-launch support and people are singing it's praises a year plus later.
There is no single error, there are a string of them. But the biggest thing here that I can see is that both titles had their quality and Capcom's brand reputation compromised because the release of SFxTK was prioritized. Policies and some rather poorly thought out marketing and gameplay decisions are icing on the cake, and one may argue are even byproducts of the aforementioned decision. It's SFxTK's fault, because the most influential decision here was throwing UMvC3 to the wolves to release SFxTK in it's busted state. If there's a part of the story I'm missing here or one of these assumptions are off, feel free to correct me, but yeah, I think it's pretty understandable why SFxTK is seen as the problem child in all of this.
