I wouldn't put Loki above Spiderman in strength. I'm not even sure about Drax. What was his best strength feats again? Spidey had some amazing feats in the short time we had with him and I'm having a tough time recalling similar with him in Guardians. Same with Groot for that matter.
EDIT: ^^^Didn't Loki stomp cap their first fight? Granted that was Avengers 1 Cap, before he went uber in Winter Soldier.
Drax really only has one notable strength feat, which is ripping apart a prison drone. Groot managed to lift up a bunch of fodder enemies with each arm, and fling them around, but, based on strength feats from guys like Cap and Luke, they could have done similar with limbs as long his. And Ronan's best strength feat is tossing a drunk Drax around. Spiderman catching a falling jet bridge should put him above all of three of them IMO.
Also, LOL at Hawkeye being included here.