and btw I have now officially lost all my games against Gouken. I've only had 4 so far but still I have no ideea how to approach the battle. Any tips?
Normally I'd say fight him like you would any other Shoto, but since other Shotos are usually Jump-in HK -> Sweep and Wakeup-SRK Guys and the 2 Goukens I metz so far play him in a more tactical way, there probably IS a difference.
One important note would be, dont let him bait you into jumping into him after a hadouken, as you'll usually eat a Shoryuken after that. Try to stay on the ground as much as possible and if theres a projectile flying towards you, jump straight up and dash to him after.
One problem against Gouken is that he can throw 2 fireballs with an EX-Hadouken so the jump straight -> dash tactic doesnt work unless very far away. This will make you block usually which gives him enough time to retreat again. You can of course try a FADC but I always fail with that ;D
On the other hand, I got no idea how to use Rose's moves properly so I cant help you with specific tactics ;/