I think it's overstating the point to categorize him as fantastic.
I honestly wouldn't be surprised in the least to see him overtaken by one of the younger corners by the time the regular season starts. The Eagles drafted RB turned CB Curtis Marsh in the third round last year, and with his size and another year of training, he could overtake Hanson. He wasn't drafted just to sit on the bench.
Brandon Hughes also is willing to play tough physically.
Also, keep in mind that last year Joselio Hanson was dropped at the final roster cuts. He was re-signed, of course, for a more favorable contract for the Eagles.
The Eagles may even draft yet another CB this offseason. Nothing is taken be taken for granted. Hanson's good, but others may be able to do better by the time the regular season rolls around.