What's the logic behind crit being better than multistrike as MM?
1) getting chimera crits helps you out a lot more with consistent damage
2) crit is still good until you can get 50% (previously 40%) due to careful aimed on rapid fire
3) because of our 4set making every aimed shot reduce rapid fires cooldown by 5 seconds, and aimed shot crits giving back 20 focus, just random toth procs allowing you to hardcast a few more aimed shots is awesome (reduces downtime of having to cast steadies, therefore if those do crit it's awesome)
So basically crit will give you more consistent and controllable burst windows, which I think is a lot better.
Multistrike I think can give some nasty burst, and I think it's value will shoot up more when we have better levels of gear (later seasons), but I also think that even though it can potentially give higher burst during rapid fires, it's also a little riskier as well, and I feel that going crit is a lot more reliable, and gives you more windows where you can kill which is very important (especially because of trinkets getting buffed and chimera shot, it feels like you can spread out your damage modifiers now way more than before for kills where for a kill as MM you needed 3v1 cc, toth, full focus, crows, proc trinket and on use trinket up with rapid fire to secure kills, compared to now where in some situations you can actually space out crows, proc trinket etc, because your smaller windows can grant enough pressure - obviously your perfect scenario burst in openers is a lot crazier now though, hence why people have seen the lone wolf hpal jungle gibs lately (those gibs will stop happening I believe, because people will eventually understand that even though the damage is super gimmicky, if they just instantly pop defensives to counter the other teams all in, they'll be able to win pretty much immediately after since it's just an all or nothing strat).
But yeah outside of going off topic, I think crit is just really a lot more consistent than multistrike for Marksman.