Yep, you have a pair of regular butts. Shoulder Butt, Boston Butt, Shoulder Blade Roast are all the same. Sometimes you see boneless butts, but most are bone-in. Even though the name butt leads some folks to think they are from the rear end, butts come from the front shoulder. (Hams come from the rear legs).
A whole shoulder would have the picnic end still attached (it's the lower section of a shoulder) and weigh in around 15 to 20 pounds. Here is a visual... whole shoulders on top, picnic on lower left, 2-butts with bone-in on lower right.
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