It does appear to be rather large in these photo's. Assuming that tiny front dot is the nose gear, and unless that nose gear is comically small. It would appear to be at least similar in size to the J-36 no?
I've put together some images of the J-36 we have at similar angles:
View attachment 157305

[Bottom left] We get a good view of the underside and its clean forward-swept trailing edges before the “lambda tips”, with no engine nozzle or TVC panel-esque angled protrusions.
[Top left] Its orientation is rotated slightly and now we can see what are either protrusions out the trailing edge, or what look more to be humps for engines — I see a distinct pair of humps either side of the centerline (which also seem large in proportion to the rest if the aircraft