Seems like heis the type of kid that wouldn't be thrown by a promotion. If the promotion were to Bowie, he would probably be happy to pitch with his brother. But, I suspect, part of the reason they don't want him in Bowie too soon is they want him to learn to get along without his brother. Hence, I doubt he will skip Frederick
Considering the mostly minor league filler team they sent to Frederick, they probably want to reward Frederick by giving them Bundy for about 8 starts or so before moving him to Bowie for the last 6-7 weeks of the season. I think there is little doubt he can and will be successful in AA this season, but there is no rush.