Well, it's really move 59. ;-) This was a very interesting game. :-)
Each player has captured one stone (circled).
For what it's worth, here is the wavefront chart.
Figuring the marked black stone as dead, White is ahead by 37 points! ;-) Figuring it to be alive, White is ahead by only 23 points.
I think that White is well ahead here. Shusaku's kosumi in the top left corner is a strong shape and that seems to be White's only weak group. White isn't lagging behind in territory and is ahead in influence. It is very difficult to find a plan for Black. Top left corner seems to be the hottest area.