No one said Devon Travis was a ceiling, or anything about prospect rankings of the two. I said that if you take the type of hitter and defender Travis is, make him healthy, and add a few extra home runs you probably get a good projection for Bo. That's probably a player in the 3 to 4 WAR range every year. Not a superstar, but a very valuable player just the same. These dreams of Altuve though are just silly. Bo does NOT have Altuve's elite speed, and that's a critical factor.
As for players in our system, Snider was a VERY highly rated and touted prospect. Sometimes even the highest touted guys don't work out.