For sure match alone is not enough. I've found though that any match below 60% usually indicates we disagree on most of my (or their) "mandatory answers". Sure, we could have a chat... but why, if we're going to disagree at such basic levels?
I usually don't even look at the profiles of matches below 60%, rarely respond below 70%, and rarely meet below 80%. My partners and I have a 99% match, there's a reason for it. I've tried several times, and it never worked out. Since time is limited, I just focus on the good ones.