Difference Between Comp & QP?

Just wondering, how does the MMR grouping work in Quick Play? After already being in a rank, of course, not when you first start the game.

Am I grouped in QP by players near the same MMR, the same way I am in competitive?

Yes. The rules for matchmaking are approximately the same, except there are no grouping restrictions in quick play, and competitive MMR/SR is separate from quick play MMR (https://us.battle.net/forums/en/overwatch/topic/20760837867#post-3).

Thanks. Also, has anyone ever tried to approximate the amount of smurf accounts?

I’ve seen some people attempting to estimate the number of smurfs in top 500 (https://www.reddit.com/r/Competitiveoverwatch/comments/7kioer/i_crunched_the_numbers_on_na_top_500_to_see_if/). Blizzard is trying to reduce this with by requiring SMS authentication for top 500 rewards (in Season 11).

I don’t know anyone who has attempted to estimate smurfs in the lower tiers, but it must be pretty high. I have three accounts, and I’m a relatively casual player. Console players get multiple accounts for free. It’s hard to suddenly switch to dps if you are a support main, because people profile snipe you. etc.