Detroit exposed some weak points- maybe a little slow footspeed wise and didn't handle a hard trapping press.
It was magnified imho to some extent because Tonys speed made Detroit alter their defense. You go from a player that causes you problems to one you just happen to be able to cause problems for...
Had some decent games prior to Detroit figuring out he couldn't handle the trap well.
Nothing I see as a fatal flaw in a rookie.