As a group that was over obsessed with the sales numbers for Asmus solo - which I get, we wanted that book to last for a long time. When it got to 38k range, there was already concern. Looking at a number 1 that only sold 38k for a company that did a reprint because they didn't expect it to do well, the under print gives false expectation. Perhaps they should have had 50k's worth of books from the get go? I don't know.
If an ongoing is desired, 38K isn't a solid number for that to happen unless you are Captain, Ms Marvel, Squirrel Girl or any other "agenda" book. This book doesn't fit an agenda.
The 38k is a book in the middle of a run amount, as we seen when observing other books. Why this would grant an ongoing with this number would surprise me.
However if the sales go up because the book got better, things could change. Keeping in mind though, first impressions and R&G1 didn't do Gambit any favors and those hardcore fans may not have stuck around for the next issue.
My apologies if this is a debbie downer view.