If 8 people play a game of competitive, fairly balanced infinity, it seems like 4/5 of the 8 players go negative or neutral. You're saying my 1.6 passes as average?! Harsh.
I was about to agree with you until you said that Infinity slayer is competitive and fairly balanced. But yes, its hard to keep a high K/D ratio when playing against people of similar skill (unless you are boosting/not playing the objective in objective gametypes etc). K/D ratios are not that important though, especially since there is no real ranking system. It does not take into account the skill of the players you kill.
For instance if someone has a K/D ratio of 1.5, but was (somehow) always matched up against good players, I would say that player is good. But someone who only had a K/D ratio of 1.5 whist playing against really bad players (like those who stand still at all times when shooting) then I would assume that they were not as good. But you would never know until you played them.
KD really isn't that big of a deal and this is coming from a competitive player. You can easily get a good kd just by playing flood or simply sniping or just using the DMR. How I see it you're only a good player if you get a "good game" message from other players as it lets you know you played good. Consider me very old school but that's how we did it back in halo 2 and Combat evolved (pc).
won't change this sig until pittsburgh steelers gets their 7th ring http://m.youtube.com/watch?v=2eVPxvaIzec