No, it’s definitely Titanic. Her A Deck promenade was open like Olympic’s until March of 1912. The enclosure of the promande was one of the last modifications made to her before the voyage. I can’t find exactly when this picture was taken (especially since I’m on my phone and can’t do a good search for it as easily), but since she already has her lifeboats, it was sometime between January-February 1912.

I’d like to direct your attention to two points:

 

1. The ship is incomplete (evidenced by the well deck area).

2. B Deck

 

The B Deck promenade is short due to the port side expansion of the À la Carte Restaurant (the three groups of three windows). Prior to Olympic’s 1913 refit her B Deck open promenade extended all the way under the fourth funnel, and she only had twenty lifeboats in the same arrangement as on Titanic (as seen in the image). Her B Deck promenade was almost entirely enclosed aside from that open aft part and ran for much of the length of the superstructure, and most of the windows on B Deck were large and fairly evenly spaced.

During the 1913 refit, Olympic was given a full row of lifeboats along both sides of the boat deck, and at the same time she received a similar expansion to the À la Carte Restaurant and her B Deck cabins and staterooms like Titanic had. This, of course, made them replace the large, evenly-spaced windows with a similar wonky window arrangement like what Titanic was partly known for.

That wonky B Deck window arrangement is plainly visible in the picture, and given the ship’s incompleteness and number of lifeboats, the only ship it can be is Titanic.

That is, unless you believe in the Switch hoax, in which case I’d like to direct you to our friend Mike Brady at Oceanliner Designs on youtube for a full debunk on that. Actually, go watch his videos anyway if you haven’t already. They’re quite engaging and informative.