Here is the breakdown of his games last year vs various opponents and detailing what other WRs were playing. Might help give a better idea of what he can do on the outside. Bryant did play in every game (thought he may have missed some). So the games Austin was out Robinson was the #2.
Week 1 vs Jets - 0 catches, 0 yards (Austin active)
Week 2 - DNP
Week 3 vs Wash - 3 catches, 49 yards (Austin active)
Week 4 vs Detroit - 7 catches 116 yards (Austin Out)
Week 5 - DNP
Week 6 vs NE - 2 catches, 43 yards (Austin active)
Week 7 vs Rams - 2 Catches, 25 yards (Austin active)
Week 8 vs Eagles - 5 catches 103 yards, 1 TD (Austin Active)
Week 9 vs Seattle - 5 catches, 32 yards, TD (Austin Active)
Week 10 vs Buffalo - 3 catches, 73 yards, 2 TDs (Austin OUT)
Week 11 vs Wash - 4 catches 34 yards, TD (Austin out)
Week 12 vs Miami - 7 catches, 79 yards, 2 TD (Austin Out)
Week 13 vs Arizona - 4 catches, 72 yards (Austin out)
Week 14 vs Giants - 4 catches, 137 yards, TD (Austin active)
Week 15 vs Bucs - 3 catches, 29 yards, TD (Austin Active)
Week 16 vs Eagles - 1 catch, 5 yards (Austin active)
Week 17 vs Giants - 4 catches, 61 yards, 2 TDs (Austin active)
So, as the #3 WR in 10 games he totaled 27 catches, 484 yards and 6 Tds.
As the #2 outside WR (which he would project at here) in 5 games he totaled 25 catches, 374 yards and 5 TDs.
So you tell me....better on the outside, or better as the #3 in the slot?