Looking at the charts, it feels like eth's run up coincided quite well with btc's weakening. I reckon smart money kicked into eth from btc when they saw 17-20k btc as unsustainable. Whether or not that would happen this time around again remains to be seen, but i'm definitely more bullish on btc. I think overall public sentiment around it has improved tremendously and the cleansing of weak hands in the previous correction shld help it perform overall better. Plus there's lightning which has been steadily growing
My overall prediction though is that btc will see another large correction of around 40% (when this happens is still unclear) before having one huge wave to take it to test new highs