I remember Bltizo posted a pic of 052D and 055 size comparison from the side a while back, now wangwenliang of CJDBY using the satellite photo of the 055 model and 052D to compare the size of these two DDGs from the top angle. His conclusion is that 055 is wider and longer than 052D, but the heigh is about the same comparing to 055.
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I'm not sure I fully agree with his conclusion -- 055 will definitely be longer and wider than 052D, but it should likely also be taller than 052D (and with higher draft as well)
That is to say, 055 should likely have a higher "freeboard" which is the height measured between the waterline of the ship and the upper deck level at the lowest level of sheer.
Higher freeboard should also mean a higher superstructure relative to 055 as well, all things being equal.
I also think his depiction of he RHIB davit is wrong (the mock up seems to suggest it is in the aft hangar structure rather than stored in the forward superstructure), and he also includes the white "protrusion" posterior to the smoke stack supersturcture which I have speculated as possibly mock-up exclusive.
Edit:
there were a couple of comparison pics I modified before, comparing 052D to a notional 055.
I have now modified the second one a little bit to show how a higher freeboard for 055, which I think will be present. The grey line is the waterline for both ships at same level, red line is 052D's freeboard, while the green line is 055's freeboard height which is slightly higher. The freeboard difference might be exaggerated a little bit in the picture for the sake of comparison, but I do believe 055 will likely have a higher freeboard by a little bit.