If this were any other version of Spidey (616, Ultimate, Maguire, Garfield, PS4 etc) I would agree but in the MCU I'm not so sure.
Before Far From Home, Peter had no spider sense, rookie fighting abilities and just wasn't that fast.
Cap, Vulture, Shocker, Cull Obsidian and even the ATM robbers in Homecoming were all able to get the better of him. Peter Quill was able to tag him with throwing bolas.
I agree Gamora doesn't have any incredible speed feats either but we do know she's far faster than Drax and fast enough to repeatedly defeat Nebula (who we've seen land hits on Thanos without needing magic portals).
I don't think Gamora will have much trouble landing a hit on this version of Spidey.
I continue to dispute the speed comparison and I rely on Peter dodging ( and throwing back ) the sign thrown at him by Bucky, from behind, during the Civil War airport fight as evidence that he had a functioning spider sense before Far From Home.
I agree that his Spider sense was very inconsistent as Shocket caught him off guard.
The ATM robbers caught Peter off guard because he was being cocky.
As for Cap, he tagged Peter as he was coming in for an attack, which is all about superior skill and timing- and let's be honest Cap is quick enough to tag anyone except maybe Quicksilver. Cap gets the better of everyone, so that's no reflection on Peter.
Thanos let Nebula hit him, because the blows had no effect ( which makes his earlier statement that she nearly succeeded in assassinating him a bit odd).
Vulture did not land any hits on Peter with his wings - he collapsed the building they were standing in. He didn't hit Peter with any blasts from his ray gun, and was only able to get ahold of Peter after he had been in a plane crash and accordingly was not at his best.
Honestly I struggle with Gamora's fearsome reputation because we haven't see a lot to back it up.
- in GOTG she gets abducted by prison thugs with shivs and manages to disarm them when they're distracted. Then she fights Nebula which is pretty even until Gamora kicks her through a hole in the ship. Did she fight off a horde of Ravagers when she and Quill were taken prisoner....nope.
She is a better hand to hand fighter than Quill, but still gets taken out by him twice - by being outsmarted.
In GOTG 2 she does eviscerate a big monster- while its distracted. Then she..... has a fight with Nebula and loses ( sort of) and then does what other feats of fighting prowess ? Nothing.
In Infinity War her fighting feats are....nothing
In Endgame she takes out some Sakaarans in the final battle, not really that impressive.
Maybe she can beat Peter, maybe she can't ( and I usually advocate that skill beats strength and speed) but I'm struggling with all the props she seems to get based on a distinct lack of fighting feats.
If I've missed a bunch of her awesome feats, can someone point them out please ?