Yes, the BL definitely has more power in its shell. In fact, as a portable amp, it's one of the most powerful I've ever seen.It's hard, they're both fantastic DACs. With my IEMs (ie800 and SE846), I feel like I'm getting more power out of the BL; it sounds fuller. But the Mojo definitely has more finesse.
Mojo wins hands down for portability, but the BL has better battery life. I don't get any EMI interface at all with OTG'ing with my phone on the BL.
Tough call man.
The Mojo, to my ears, is the slightly more resolving of the 2. I'd take either in a heartbeat, when it comes down to sound. If you take it as a whole package however, the Mojo wins hands down. The BL is simply not very transportable, due to its size and its shape - it's not very good when stacked.