At least Tag chose a good movement - the 6S37 upon which the 1887 is based is one of the finest modern mechancial chronos available. MUCH finer and classier than the Valjoux you typically find in luxury Swiss chronos.
Yes, you are the only one pointing out, Seiko mechanical chronos (in this case, used by Tag Heuer years ago) is actually superior with column wheel and sell much higher than commonly used Valjoux 7750 in mid-tier Swiss Watch. So it is good for Tag Heuer to use Seiko Mechanical Chronos movement, but like what being said, not so good for Tag Heuer to be related to wide range (from low end) Seiko.
However, the more I understand Seiko mechanical chronos, the more I love to own one.