With each of the previous 3 qf's having a winning margin of over 40 points, can we expect the same today from the tightest of the 4 qf's today

Here are some stats.
Firstly, Number 4 Seed Ryan Taylor - 8 Wins, 792 Points
Highest Score: 123 vs. Martyn Simpson (6th Game)
Lowest Score: 76 vs. Chris Civil (2nd Game)
9's Achieved: 3
Conundrum Success: 1/8
Secondly, Number 5 Seed Brian Selway - 8 Wins, 746 Points
Highest Score: 109 vs. John Drinkwater (1st Game)
Lowest Score: 63 vs. Cherry Barnett (3rd Game)
9's Achieved: 0
Conundrum Success: 5/8
This does look like it could be a close encounter. I think that both of the contestants have the ability to extremely excellent one minute, then suddenly just drop off the radar within an instant. I think the winning margin will be sub-20 today, but as to who will win, I'm not quite sure....