The blower makes a difference.
The SEER rating is for the complete system, not just the condensing unit and coil.
Send the request back to manufacturer with the specific Blower, coil, and condenser model and serial numbers.
If you have the variable speed indoor blower, it is more energy efficient and will up the rating for the entire system.
I just replaced mine last year and the same condenser unit was used for both the 13 and 14 SEER unit.
I chose the 14 Seer installation with the variable speed blower.
This unit uses a soft start motor that ramps up to full speed after a minute or so and ramps down slowly also.
It also will run at about 10% speed continuously on about 70 watts if chosen on the thermostat.
Jim

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Jim Luttrall
Mr. Inspector.net, Inc.
Allen, Texas 75002