It's massive because of context. Massive is inherently a comparative term. Something can't be large or significant unless something else is small. Here the context is performance gains (in comparison to other forms of PC gaming) constrained by 1) being on exactly the same hardware 2) a sizeable price difference between the two options.

Here the performance gains are 10+% for a device which costs more than 10% less. The size of the performance gains in the handheld market would otherwise need you to buy a new handheld, and those fps increases would demand spending at least a few hundred bucks on a new GPU.

So massive performance gains with the implied context is absolutely true.

I was referring to this specific edit to your initial comment:

Edit: geez this single comment brought more people out of the woodwork to respond to me than anything else I have commented on lemmy

I'm not even here arguing which one is better like come on now

Massively is the wrong word to use it's that simple

While I personally think that an average of over %10 FPS improvement in itself qualifies as massive in the current landscape, reasonable minds can absolutely disagree of course. The inclusion of price is just another layer of advantage, only bolstering the "massive" overall improvement.

I have been having a nice evening so far, thank you, and I hope you've been having the same.