you can use the ranking medal sometimes

if 3 gold bar or no medal, then BO lvl < 100, thus Yammy

if bronze medal, than could be high lvl yammy or low lvl SY

if silver or gold medal, then most likely SY or rarely a formidable player with high lvl crew back on Yammy

I usually dont judge players based on lvl or win percentage since there are low lvl prodigies / ebve as well as BB5/6 who cant aim for beans but it provides a first impression.

Not true, because I have ships with HIGH LEVEL crew.
And people can train their lower crew on a lower ship ...