That's comparing apples to oranges.

We intentionally compared them against each other on different properties.

Great question @Lorraine Hadden,You should always compare both side by side to see the advantages /disadvantages to each.

I agree with @Michael Baum, are they true comparables? 

This shall apply to single glazing and each pane in multiple glazing.Exception: Glazing that is more than 60 inches (1524 mm), measured horizontally and in a straight line, from the water’s edge of a bathtub, hot tub, spa, whirlpool or swimming pool or from the edge of a shower, sauna or steam room.

Emphasize that your offer is competitive and you’re ready to move now, or set a reasonable deadline for the offer to ensure the seller knows you’re serious.Use Comparables StrategicallyHave data on hand to support your position.

OP, keep in mind not having access to heating and sharing same water heater and etc will require an easygoing tenant in the nextgen.

How does it compare to other options available to you?

If you were comparing RE/MAX Broker A to RE/MAX Broker B, then I would say it probably doesn't matter.

I've painted more walls, ceilings and trim work than I could ever count in my lifetime and *I* suck compared to professional painters, and most of my paint jobs could pass for lower-end professional jobs.