I think their point is, if you have 5 investors, 4 of them are offering you a high valuation and terms, and 1 of them has the lowest valuation but he brings the

I think their point is, if you have 5 investors, 4 of them are offering you a high valuation and terms, and 1 of them has the lowest valuation but he brings the most to the table in terms of connections, advice, being aligned with you on the vision, etc, then you should go with that last investor, even though his valuation is the lowest. This is the same point that CloudFlare's founders stressed in their recent interview on startup school.