As you can see bitcoin grows in faster rate than ethereum. Just take a look on recent changes: not so long ago BTC increased almost by 1000 while ETH is still staying at the same point. Could be good if ETH had the same resilens during the correction but I got some doubts about it.
Bitcoin is the first and is getting support from a large community, much bigger when compared to that of Ethereum. One thing that matters a lot in all these things is the amount of support they are getting, without the community they are worth nothing.
Bitcoin was the first, and I remember when it was at the rate of $0.7, from that rate it went to $1, $1.5, kept on going till it reached $7000+ plus now. No coin can beat it.