I don't like the datograph (anymore)
the watch is way to thick. Such a thick watch should have a 44mm diameter.
Concerning the 5070's size ... 42 mm is NOT tto big. 47 and 60
mm could be a fad bet 40-42 is a normal size.
Watches always grew in size. 33 mm in the 1930's, 36 in the 1950-1960's and 38 till 40 in the 1980-1990's. Today 40 and 42 are normal size. Besides the 5070 does not look that big. Some time ago I compared one with a journe CS which was 40 mm. Believe me, those 2 watches looked exactly the same (in size ofcourse)