So did "luck" prevail in the Monty vs. M. Petch match?

I won the series, 5 to 2, and I'm wondering if those of you who
followed it think it was decided by a clear skill difference or was it
due mostly to luck?  And what is the GNUBG *****sment of luck overall
(as well as skill)?

On another note, I think 15 points is too long, as I found myself
losing focus towards the end of some of the matches, not that I'm
trying to make excuses, but I think that 11 points is probably the
limit, at least for me (unless I'm playing an incredibly weak player,
I suppose).