Gear and XP req scaling after 100?

According to Deusphage gear is, apparently, designed to get stronger after level 100 at a slower rate than in the rest of the game (I guess this makes sense given the existence of the Item Upgrader for Mythics). But I don't know what that rate is. Is it so low that it doesn't matter? Is it high enough that Morph won't be effective or even viable at the end levels?

Adjacently, the wiki has not been updated with the XP requirements for 105-121. Does anyone have those? I can't get a good impression of how much any given piece of content is worth level-wise using only the XP percentage that Wynn provides.

 

hm, not really? I have a bunch of pre-fruma builds that still work - dealing damage to and being able to sustain fruma enemies and bosses. but a lotta fruma gear has been pretty big in upgrading the builds that they are more versatile. that said...

morph has always kind of worked in a sense that "surprisingly you're still here!" considering it's gear that you've progressed with; it'll still work but similarly with what i've mentioned earlier, to a way lesser extent than it even used to

not exactly from the game directly? but you can see how much xp is required to level up w/ wynntils

 

I don't have Wynntils.