a lot of things to consider besides the whitepaper. analysis and consideration not only of the whitepaper only. the team and a lot of things more important to watch out for. Although it is indeed important the whitepaper still will not be able to generate fully confidence for investors.
Whitepaper is not represent all of the idea and it can be changed anytime. Basically to determine how good that crypto is based on the whitepaper is the worst idea ever I seen. If you are seeing only from their proposal and concept and that I believe that will not give you a lot of accuracy.
It can be made to be that this is such how good are their projects i , i mean it can be cheated on what they have to tell on their project so if you are looking and see only for the whitepaper try to look for another way of it.