You obviously don't fly Boeing 737s because the FCTM says:
7000hrs PIC in them up until 4 years ago. 777 these days.
Maneuvers based solely on a TA may result in reduced separation and are not recommended.
Nor did I sugest doing so. I stated that you use the TCAS as a cue to aquire the target VISUALLY. Kindly state the 737 FCOM reccomendation as to how to react to a T/A. The 777 manual is as below:-
Look for traffic using traffic display as a guide. Call out any conflicting traffic
If traffic is sighted, maneuver if needed.