OK, I officially declare this Ken epic. Congratulations on a good make, pal! The only things that felt kinda wrong with him are how samey all normal Shoryuken versions feel to each other movement-wise (what I mean is, it doesn't feel like HP is different enough from LP) and his MK Tatsumaki being Gouken's, for some reason.

Here's my extensive feedback on him:
- Intro 4 is meant for when he's against Terry, because he's supposed to be picking up and throwing his cap.
- Some hitboxes could be lowered like his Far Stand MK and EX Tatsu because they'll whiff mid-combo on the likes of KFM.
- Might I suggest making Machine Gun Blow only accessible by tapping 1 specific punch button (E.g. Tap LP for the Light variation). I sometimes accidentally use it when trying to do his LP,MP,HP Chain Combo.
- Speaking of Chain Combos, I find it odd that he can't cancel from it seeing how crazy this is move-wise.
- EX Costs are inconsistent. For example, EX Shoryuken costs 1/2 a bar, Joudan Sokotou Geri is 3/4 a far, and EX Senkugoshoha is a full bar.
- I also wish he could Air-Super-Cancel from Shoryukens while he's mid-air like EX Tatsu.
- EX Bakuretsuken should drain power and have the EX FX at the start, not on hit.
- Might I suggest making it so moves that stun can only stun once per combo so you can't (sorta) infinite? (e.g. EX Senkugoshoha)
- Hishoukyaku could do with more hits and a tad more damage.
- Kongou Kokuretsu Zan:
A. Could do with better pushback since if it's blocked up-close he's wide open for a punish.
B. Could have more consistent guard properties. The starting earthquake is blocked low, but then the erupting flame(s) is an overhead.
- Why not give Gouka the typical Raging Demon command?
- The super system in general is probably the strangest thing about him.
Supers have different animations with more damage depending on the power he had before using it, but I feel like you'd be better off using, the classic LVL1/2/3 thing where the most powerful is a Level 2 or 3, but you can still use the Level 1 version. The current system isn't very balanced especially when certain Level 1s don't have stronger versions which gives you little reason to use them at full power.
- Why not use AILevel for AI commands? It's weird seeing the var(59) method nowadays because the difficulty doesn't scale with the MUGEN difficulty level.
- I also saw the AI use a non-super Shinryuken which isn't mentioned in the Move List.

There's several more small nitpicks I have but I decide to give you the more noticeable stuff first.
He has his flaws, but it's a good take on a 'Super Duper Master Ken' based on what I've seen.