uh, ps4 and switch are incomparable. as someone who works with video games and consoles, i can tell you that having a ps4 doesn't mean you don't need a switch. if you're comparing xbone and ps4, yes, that's a good comparison since they're both selling the same thing: home consoles. when looking at the 2 side-by-side, you'd be comparing specs, ui and exclusives. in that situation, i'd recommend a ps4 over xbox by far, as the specs are similar but ps4's ui and exclusives are much better. however, switch is different in the fact that it's not only a home console. while it can be a home console, the big unique thing about the switch is the "switch" factor of it; switching between a console and a handheld. the specs of a switch vs a ps4 would not even come close, because the switch sacrificed graphics for the portability. same with the joy-cons, there are no joy-cons for the ps4. all that is unique to the switch, so since the 2 are so different, it'd be difficult to compare them as so. but if you're only comparing the exclusives, well you'd have to look and decide. there's also the possibility that p5 or p5r are coming to switch later on, so if that's the exclusive you're looking for, well it's not so exclusive anymore.
The design flaw is that it's super easy to make the sticks drift. Dirt often gets stuck beneath the sticks, which make said drifing happen.
ah yeah, you right