Top Spin 4 has better graphics for sure, but otherwise all other comments I see around it in comparison to Virtua Tennis 4 are bullshit. You can play Top Spin 4 with one button just fine. I beat the AI on the hardest difficulty like this, it is very similarly done to Virtua Tennis, the ONLY differences are that TS4 forces you to charge your swings, it has more animations and an announcer that tells the audience to remain quiet. I can also respect that the actual characters always play as good as their real life counterparts, but stuff like that is not fun for people who are not avid tennis fans already and have no idea who is better than who. It is kind of a mess when the AI in TS4 does not even react to balls that are hit too far away from them usually.
Actually if anything Virtua Tennis just gives you more control over your shots. If that is really the only complaint outside of having constant music and minigames, then I do not see what the big deal is at all. I know people who actually play tennis and even they have trouble caring about which one is better conceptually, at the end of the day they all had more fun with Virtua Tennis because it has way more content and has a sense of humor.
If there are people who do not like the music or minigames, then they can just be ignored entirely. I do not see the issue at all.