@chris-doldolia yes. Alone my starlink download speed peak was a bit under 300mbps (usually lower, but I'm not motivated enough to run hundreds of runs across a few days and compute real statistics ;>). Download peak was about 150 (again, usually slower). Even the worst case starlink hasn't been observed to be too bad). And mostly our workload is dominated by video streaming (with various package and ISO downloads sometimes providing challenges). If/when I go back to having enough video conferences to justify special rules, I might want to steer those to Comcast (of course, Comcast unreliability is why we got a starlink ;>). Our comcast performance peaks at about 300/300 (paying for business grade service). But typically the Comcast upload is significantly slower ... so sometimes starlink is ahead, but Comcast is usually ahead.
I set the gateway group rule to {packetloss|high latency} which probably favors Comcast (their latency is typically significantly lower than starlink). What those precise values are isn't obvious to me (but no doubt documented somewhere in the FM!)
Rereading your last response, I've never seen the group result being worse than the starlink standalone ... and disabling Comcast and using only the gateway group the results are a wash with connecting directly (except for latency .. the starlink speedtest removes some of my LAN internal hops, or at least that's the most obvious explanation for what I observe).