Nah, probably just because the crappy gear they give you.
I mean you die in like 2 hits or something when I tried it. I swear with good gear like nothing does that even endgame in most MH games. So felt pretty bullshit to me.
It's more like three good hits and you're dead (though maybe the elemental resistance on the GS build differs from others?)
I don't disagree the armor might be BS, but honestly my feeling is... a new MH game should kick your ass. At least a little?

Playing the Rise demo for the first time was a bit like the Tri demo back in the day. I almost timed out on the easy quest for Rise and I think I carted a few times.

Meanwhile in GU I'm taking on high rank Elder Dragons and climbing the HR ladder. I definitely agree that Mizutsune usually takes much less time when you're playing with your own armor in the proper rank, but the thing with Mizu there usually isn't trying to be the strongest monster of the tier. Here, in the demo, Mizu is positioned as "the hard quest." So that probably scaled things differently compared to the final game too, I bet.
Dying in 2-3 hits is actually forcing me to re-learn the specifics of all the GS attacks/animations/etc. (the Valor hunter style in GU plays differently from stock GS) and it's been a lot of fun. I'm already pretty familiar with all the attacks and animations for Mizu and most of the rest of the demo monsters.
Wirebugging around raging Mizu six ways to Sunday while it's firing ice beams and shit all over the place be like:
