I guess we should look for ICOs with a good strategy (market demand, proven business model) from experienced team.
There are also lots of reputable blogs with actual ICO comparisons - for example this guy' previous advice seems trustworthy, that's how a ICO comparison should look like: 5 Moon-shot ICOs set to shine in April and May 2018 - LCCX, Truegame, BitRewards, Minerva, XTRD