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human
[MCU] Could the Guardians take down the Avengers?

A lot of people seem to think the Avengers would win. I don't think the Guardians should be counted out so quickly. Faced with the same situation I feel the Infinity Stone would kill some of the Avengers.

* Rocket>Iron Man (he put together a moon-busting bomb using random parts) 
* Gamora > Hawkeye & Black Widow (Her sis tanked a space rocket launcher; I'm assuming she has similar augmentations) 
* Drax got back up after being smacked around by infinity gem powered Ronan. Says a lot. I don't know if any Avenger would be getting back up after that. 

Thor and Hulk would be the only characters the Guardians would have to worry about imo. Groot and Drax are durable enough to survive Thor and Hulk until they get support from the others. 

Also how powerful is Star-Lord exactly? Would Ronan on team Gaurdians make this match-up more balanced?
gpt
The Avengers have Thor and Hulk, as you said, and they have Captain America as their strategist.

Thor or Hulk would splinter Groot first and within seconds, and that's most of the brute defense they have. 

Rocket *could* out-tech Iron Man, but Groot probably couldn't stay in the fight long enough to be a factor. Without protection and weaponry he's really just a small tough animal.

Gamora would be tag teamed first by Black Widow and Hawkeye, and might hold her own, but she probably can't beat Cap as long as he's got his shield, and she's definitely not doing anything to Iron Man, Thor or Hulk either, so it's curtains for her sooner or later.

Drax can fight and he's tough, but again, Thor or Iron Man can blast him from range and he's straight dusted if he steps to Hulk. If he underestimates Cap he's gonna lose a few teeth, too.

Star-Lord is...mostly human. He can't even trade blows with Hawkeye and expect to win. 

It's just not a good matchup in a straight up fight. If Star-Lord is aware in advance they're coming and knows who they are, he can formulate a good ambush plan which would go a long way to evening the odds, though. A surprise attack that somehow incapacitates or removes Thor or the Hulk puts them in a very good place. 

Also,  this assumes a neutral space, not the Guardians' home turf where they, Rocket in particular, have access to extremely powerful tech and gadgets.