I see some of the ads they put out, and I have to say, I agree with your friend.
All of those ads use all the old and ugly horses. The ones from the first year or two of the game. They used to animate their horses terribly, and they all had, like, huge bulging eyes. The animation team has upped their game lately, though, and all of the new horses look much better than the ones they use in ads. They actually look kind of realistic (or as realistic as a cartoon horse can look).
But for some reason, the new, pretty horses like shires, friesians, icelandics, etc. never appear in the ads. It doesn't make sense.
STAR STABLE Y U NO PUT SHIRES IN YOUR ADS?!