None of the teams have been completely throwing, team comps aside. There's been target focus, grouping up, appropriate use of positioning/high ground, etc. Which is, of course, emblematic of what pro play would naturally be - if teams were 100% ignoring everything, we'd see way more solo q gold shit. Like, NYXL clearly was still kind of working as a team even with their main healer running around on McRightClick. Whereas with Mayhem, Fuel and Dragons, we could clearly see a disconnect in the team between the members. So seeing a semblance of teamwork, to me, suggests a basic level of competence that's not suggestive of a bottom 3 team.
Also in the top half of the inaugural were the Valiant, Spitfire, Uprising, and NYXL. So clearly, Boston didn't look the like the worst team, and we saw an inkling of what the better teams were. Fuel and Dynasty were the outliers, I guess.