Give each requirement its own place
Describe how you use the garage and what you want from the door’s construction. Separately ask what performance documentation is required for the property. Combining those discussions into a single word such as premium makes it harder to compare actual specifications.
Read the thermal information on its own terms
DASMA explains whole-assembly U-factor as a thermal measure. Ask what a quoted thermal number represents and whether it applies to the selected configuration. A number attached to a material or section should not be casually treated as a complete building-performance guarantee.
Verify the final selected combination
Changes to windows, size or construction should be reflected in the order and supporting documents. Keep the exact model identifiable throughout the decision. If the supplier offers an alternative, ask which parts of the specification change rather than assuming all performance characteristics remain identical.
Your questions
Does more insulation automatically mean better wind performance?
No. Those are different attributes. Request the relevant documentation for each instead of inferring one from the other.
Will the installer select the needed documentation?
Ask who is responsible for confirming the applicable product and installation requirements. Make that responsibility explicit before the order is finalized.