Power, Action, Weight, Warranty, Service.

I understand some of the Cabela's rods are made by decent manufacturers, but you really do get what you pay for. If you're fairly new to flyfishing, the BPS and Cabela's rods may serve you well. If you've developed tight loops and a quick, smooth casting stroke, you may be disappointed. My first fly rod was a BPS 5 wt beginner combo. It was adequate for the first year as a teaching trout fly rod, but had little power and a slower action than I now prefer. You need more power fishing for steelhead due to the length of casting, need for long line mends, weight of sinking lines/flies (for winters), and stength of fish. A reel with a powerful drag is a big plus too. Just because it's a disc doesn't mean it's strong. Some people start with one of these combo outfits and use them as a spare later when they upgrade.
Hope this helps!