Probably an insane amount, if it's accurate. An accurate birth time isn't easy to find unless you have access to a copy of their Birth Certificate. Even then, it isn't always accurate.

The Leo ascendant does make some sense, though. I'm more interested in house placements, myself, but even with my general dislike of the misplaced importance of the ascendant, it would make sense. If you can consider astrology sensical, lol.