Not a good comparison because, it is my opinion that, the Broad Arrow is overpriced by $800 - $1000 compared to the Seamaster Professional Chronograph (America's Cup 2594.50.00, Non-America's Cup 2594.52.00). Both list for $3495 US MSRP on Bracelet compared to the Speedmaster Broad Arrow which lists for $4495 on bracelet. The Seamaster Pro Chronographs are also Water Resistant to 300 meters while the Broad Arrow is "only" water resistant to 100 meters. I'll give the BA the bennefit of a doubt for the bracelet, because it is head and shoulders above the Seamaster Pro Chrono. Both watches use Caliber 3303 or 3301. I think $4495 is a better match for the DeVille Co-Axial Chronogaph (on strap) with Omega Caliber 3313. It ads the Co-Axial Escapement to the movement and also has a Sappire Caseback. The Speedmaster Date uses Omega Caliber 1152 which is a modified ETA/Valjoux 7750.
Caliber 33xx is an exclusive movement to Omega developed and manufactured in conjunction with F. Piquet. It has is a column wheel chronogrpah mechanism as opposed to a cam chronograph mechanism in the Speedmaster Date. A column wheel is generally considered more expensive and harder to manufacture. IMO it also provides a crisper chronograph function. It has a Free Sprung Balance and is a Certified Chronometer (most of the other Speedmasters, including the Pro and Date are not). It is in a higher grade catagory than Cal 1152 because of it's exclusivity, column wheel mechanism, free sprung balance and craftsmanship.
The Broad Arrow is rated to 100 meters water resistance while the Speedmaster Date is rated to 30 meters water resistance. The BA has a screw down caseback while the Speedmaster Date has a press fit Caseback (I beleive).
