First team was not using their best players... likely use a common line-up hoping to get an easy queue and sub in their best player. Second team is just a truck... plain and simple once you pass the breaking point (believe to be ~2000 average), everyone gets into the same queue.
I tried queuing 2 teams @ the same time... one with sub 1000 rating per category (still better than the team you faced) and my regular team (4000). Both queue within 1 minute of each other, my main team got a season much faster (~1 hour faster, basically 20 minutes vs ~80 minutes) than my weak team and they were different seasons. My 4000 rating team got into a season with 2 trucks and was 5th or 6th best team (ended up beating 1 truck because he didn't energize but lost to the other one in the final). My weak team lost 3 games in the regular season (2 while sleeping and the 2nd game of the year when none of my players were even trained) and 16-0 in the playoffs, all team had average sub 1000 in his season (fair season at least at the start, i had over 1k across the board after 3 subs at the end of the year) and i got a Tim Duncan Legnedary for his season (first win in over a month... basically since my first 3 seasons with my main team).
Second season test... my weak team currently hasn't faced any team > 1500 rating... my primary team has a 7000+ truck in it. Wasn't same queue time this time (despite both teams getting to the final, my primary team playoff was only 17 games, basically only 1 series in the first round that went 5, everything else went 4-0).