To those that don't know who Doc Green is well i recommend to read the following comics to understand it
but about the Doc Green being weaker than Savage Hulk
Who shot the Hulk?
Now saying Doc Green is stronger than Savage Hulk is not right but is not wrong as well. He defeated Iron Man's armored city and his latest Hulkbuster at the moment. Create a earthquake all over the eastern seaboard, later in a fight against another Hulk from new avengers i think it was #18 they were creating earthquakes all over the world (the only Hulk that has done that up to now are either the Hulk who was separated by Dr Doom but retained his intelligence (who did it while inside the earth) and WBH with one step. Savage Hulk doesn't have that many feats that surpass Doc Green when coming to strength. Hell as said before Doc Green is just Savage Hulk with the Extremis Serum to become even smarter than Tony and Bruce. Doc Green didn't had trouble getting angry he had trouble with getting angry. Not the same and in his fight with Rulk he finally embrace the Savage Part of himself and cut lose. And in his talk with Betty Ross he said he accepted the fact he is the Hulk and nothing will change that. I recomend you to read the comics again and you will understand it.
Wanna striking power of Doc Green? Here are the examples I already mentioned. Doc Green = Savage Hulk
Savage Hulk defeated him by intelligence could even be said he defeated him by plot devise. Hulk saw how Rulk's heat was affecting the environment and then he proceed to get stronger while Rulk actually got hotter and his punches stater to fail. Rulk even said "So hot... What did you do to me" His attacks started to fail bc of how mad he was and that's when Hulk proceed to one-shot him. Hell even Thor star beating the shit out of him in his come back. Then Hulk star getting angry and stronger until he finally could defeat him. That's how he defeated him. Not bc he was stronger not bc of anything. Rulk had always been stronger than calm Hulk/Doc Green, except for Green Scar but that Hulk was in a whole other lv.
Now their are the same dude, their base power is equal, the problem is Doc Green is stronger than Savage Hulk bc he can also enchant his attacks with chi and knows how to fight. That's it. They both in lifting strength are equal as they are the same dude. But Doc Green is stronger in striking power bc of fighting skills and the ability to increase is striking with Chi.
Now some people think Doc Green has problems at getting angry but this is a error. Doc Green doesn't have problem at getting angry he has problem with getting angry. He could always control it and even directly to calm himself out.
Until he finally embrace it when fighting Rulk once again.
He hated what the Hulk is but he embrace it and accept it.
Doc Green tried to fight Rulk in a smart way (as he nerfed him so Rulk couldn't absorb radiation and become stronger) but he couldn't defeat him with fighting skills alone.
He saw that and he took his savage part. He went all the way out and nearly destroy him to the point he easily broke Rulk's arm and destroy him.
So yeah that's my answer Doc Green is Savage Hulk but smarter than Banner. Though his intelligence is downgrading to the point he will be just the Savage Hulk once again this won't be instantly it can take from 1 to 10 years.