Search up and read back on some old topics on Mottled Houdans. You'll notice that none in the US are truly up to par, although color isn't really a matter right now. What is, is the body. It is a little hard to say but so far it seems he's okay, not enough breast, and it is hard to judge the crest, but he looks a little better than most I've seen.
The Mottled Houdan on the feathersite photo is not "what they should look like"
- Too little breast, too little white, too low set of tail, very drooped wing carriage.
He has the same upright body, same breast, same tail as even my Tolbunt cockerel. He need as a more horizontal body, a deeper chest, - He needs to look like a truly dual purpose bird with 5 toes, beard/muffs, and a crest.
As said, still better than most I've seen, but he still is quite similar to Polish. And even my pictured boy isn't as Polish really should be, but very close.