Sprite vs Rocket:
Yeah, what everyone else has said. Without the chance to build some kind of defense against invisible people beforehand, there's nothing Rocket can really do to keep from getting stabbed.
Oh, and regarding benchmarking for strength, yeah, its tough since its only one movie and a lot of split attention. However, what I do is this: note that Druig is one of the "weaker" Eternals, lacking any physically oriented powers or combat skills of note, and generally portrayed as one of the squishy, non-combat people. Despite this, being carried hundreds of feet into the air by Ikaris, thrown towards the ground, and zapped with an energy blast the whole way down with enough force to literally drive him into a hole in the ground far enough to be out of sight? Was something that Druig not only survived, but eventually got himself back up from to rejoin the fight later ( albeit clearly still worse for wear ). This puts something of a lower boundary on Eternal durability, since even the most conservative interpreations of how much strength Ikaris has, and how damaging the eyebeams are, still leaves "hundreds of feet of fall" and "driven straight down into the rock". Combine this with a basic supposition that strength and durability at least vaguely correlate, and you can get a rough feel for how powerful the individual members are. Hence why I'm comfortable saying that Ikaris is roughly in the Thor tier, given he was shown able to effortlessly overpower Druig, implying a sizable physical edge ( plus supportive facts like his flight speed and wrecking their ship with a few vision blasts ).
( Sprite stabbing Sersi? Note three things: we don't actually know anything about how mundane or not that dagger was; by this supposition Sprite would also have the "baseline Eternal" level of enhanced strength; and Sersi largely walked off the gut wound given some time. )
you guys talked me into reading it. What issues are this?! Tell me!! 
