On the contrary, I get people on my team I believe can’t even breathe without conscious effort all the time. That does not mean everything is as it feels however. The simple explanation would be that they’re just that bad and statistically you’re bound to get those at some point. The slightly less simple one would be that HotS uses a very sophisticated matchmaker to give you unfair or unwinnable matches that still are between teams of similar MMR.
AZJackson here says it’s the former, but since he is part of Blizzard we could of course call him a dirty lying weasel. In that case however one should be able to provide some sort of compelling evidence to support their claim. And I’m afraid I must request something a bit more concrete than feelings.