well it's impossible to say where they'd be as the only way to look at his goal contribution is to take it out and see where they'd be if they didn't score any other goals without him being there, which is extremely unlikely but hey, at least we can see his contribution:
Games he's scored in:
Fulham(H) x 1, result: Win 3-2, without Goal: 2-2(-2 points & -1 GD).
So'ton(A) x 3, result: Win 3-2, without Goals: 0-2(-3 points & -3 GD).
L'pool(A) x 1, result: Win 2-1, without goal: 1-1(-2 points & -1 GD).
Stoke(H) x 1, result: Win 4-2, without goal: 3-2(-1 GD).
Chelsea(A) x 1, result: Win 3-2, without goal: 2-2(-2 points & -1 GD).
Arse(H) x 1, result: Win 2-1, without goal: 1-1(-2 points & -1 GD).
WHU(H) x 1, result: Win 1-0, without goal: 0-0(-2 points & -1 GD).
Reading(A) x 1, result: Win 4-3, without goal: 3-3(-2 points & -1 GD).
MCFC(A) x 1, result: Win 3-2, without goal: 2-2(-2 points & -1 GD).
S'land(H) x 1, result: Win 3-1, without goal: 2-1(-1 GD).
N'castle(H) x 1, result: Win 4-3, without goal: 3-3(-2 points & -1 GD).
WBA(H) x 1, result: Win 2-0, without goal: 1-0(-1 GD).
Wigan(A) x 2, result: Win 4-0, without goals: 2-0(-2 GD).
L'pool(H) x 1, result: Win 2-1, without goals: 1-1(-2 points & -1 GD).
Spurs(A) x 1, result: Draw 1-1, without goals: 0-1(-1 point & -1 GD).
So United have won 13 out of 14 games in which RVP has scored, today was the first time they dropped points and that was in the 92nd minute. Without RVP's goal(s) in those games United would have won just 4 of those games, so it's clear what his impact has been, as shown below:
w/RVP goals:
Pld 15 W14 D1 L0 GD: +19 Pts: 43.
without RVP goals:
Pld 15 W4 D9 L2 GD: +2 Pts: 21.
so United would be 20 points worse off and 16 goals worse off in their GD, which would mean they would be in the table:
Other Games: P8 W4 D1 L3 GD: 7 Pts: 13.
Equals Pld 23 W8 D10 L5 GD: +9 Pts: 34.
which would put them 7th, 17 points behind us. He's sure made an impact but I doubt United would be doing that badly if they hadn't signed him.<br /><br />-- Sun Jan 20, 2013 7:25 pm --<br /><br />p.s. They also wouldn't have got the replay in the 3rd Round of the FA Cup, and would have lost away in Cluj so wouldn't have qualified for the knockout stages of the CL, hypothetically speaking.