From what I've seen of Rotundo, skill wise, he's probably there. The question is athleticism. Pulisic has world class quickness -- and displayed it very young. Reyna has all the physical measurables to be a great player to go with his skill. That Dortmund is even looking is impressive. But I suspect that when they do evaluations of foreign prospects, they are looking for players with the upside to be strong performers in the BL / be sold for a lot, and it's not a surprise they grabbed two of the highest potential US prospect in the last five years.