Ball spots and even the break are kind of deceptive.
Games on the wire is a little more sensible (see SJM's post).
Here's a pretty interesting account of a
C/B player vs. Shane and Busty, getting massive weight.
Dippy Dave played 3 sets. These are the details (to the best of my knowledge)
First 2 sets, for $10,000 each vs. Shane:
• The breaks
• BIH after the breaks
• The last 4
• 7 on the wire going to 13.
Shane won both. Dippy made it to the hill one of these sets while Shane needed to win 4 games.
So I'd say this is close, but maybe favors Shane a bit since the 2nd set wasn't as close.
Third set, for $50,000 vs. Busty.
• The breaks
• BIH after the breaks
• The last 4
• The call 4-ball
• 18 on the wire going to 40.
Once again, Dave hits the hill while his opponent needs 4 racks, but this time Dave wins.
So the OP's spot is not really out of line. I think top pros could give a C player that spot
and win, assuming Dippy Dave is correctly clocked as AT LEAST a C player.
And that's not even factoring in the shakes. Dippy plays for big money
routinely and is a pro poker player. Some random C player from your local pool room
might choke a few shots that Dippy made, because they're not used to playing for big money like he is.
It does depend on a few critical things tho -
If the table's breaking easy and there are lots of 'golden breaks', they might need to remove
the 'wild balls count on the break' spot. The pro definitely can't allow the C player
to rack his own and determine the racking order.
And no matter what, the length of the race needs to be long enough.