I guess ETH is better than Waves right now, ETH is still going to expand Eco-system quickly and almost standard for ICO platform.
On the other hand, Waves is going to catch up ETH regarding some items such as security and GUI, etc.
If ETH could not meet improvement for anybody common requirement and WAVES is growing faster to catch up ETH within a couple of year, Wave will be win vs ETH, but not NOW.