Not really.
Market cap says something but not all. When you or anybody choose to invest in a project, it is necessary that you do a deep research into the project by: joining their community, having yourself trying their products.
After that, do valuations: will this community grow stronger or be less and less supportive? Will these products be any relevant for the future anymore?
Low and high risk is about how you do a research and invest in a coin with little of knowledge or a lot of knowledge..
Yes Buy the best technology and adoption.is also the part of wise investor to look about these stuff. Not only the technology other things also need to be mention i am here talking about the market cap

and how to analyzes the coin according to the market cap