Both were borne of the same womb and launched at very similar times. They were essentially horses that started at the same line - No 3 year difference here.
I don't disagree with some of the things you've said, although we certainly have no control over whether people wish to express interest in Monero in whatever way they see fit. That having been said, I think the "out the gate" bit is a key element here. Monero launched on 2014/04/18.Even though BBR was announced a few days later, it only launched a full month after Monero, on 2014/05/17. I know that in the grand scheme of things this may seem inconsequential, but in the rapidly moving altcoin space it meant a full month's lead on BBR. Whether that is the only element of Monero's current success...I don't know...but it certainly played a huge role at the outset.