I love the mental masturbation here. But it's simply logic, assuming the following statements are indeed true:
Statement: It is no surprise that the SP of a game will look better than its MP
Statement: Jaks is showing a video of Xbone SP vs. PS4 MP
Statement: Jaks has said one version is clearly better looking than the other
Statement: Jaks said you would be surprised at the outcome of Xbone vs. PS4
Conclusion:
If all these statements are in fact true, then the only logical conclusion is that the PS4 MP looks better than the Xbone SP, that is, the only possible "surprise" assuming all those facts are true.
The only thing that could change this is if Statement #1 doesn't happen to be true in BF4. For example, if the SP and MP in BF4 are identical. In which case, the surprise could be either Xbone SP looking better or PS4 MP looking better, although I think most would agree that the Xbone SP looking better would be a bigger surprise in that scenario. Megaton actually.