Most USB microphone advice starts with the brand, and the recorded data here says the decision starts earlier, with the element type. A condenser microphone and a dynamic microphone behave differently in a room, and that difference comes before the microphone is connected to anything. The two USB microphones in this catalogue sit on opposite sides of that line, so this shortlist places each one against the criterion it satisfies.
The criteria used are the recorded element type, the recorded pickup patterns, the recorded connection path, and whether the microphone has built-in headphone monitoring. The order is a reading order rather than a quality ranking, and the reason for that is given below.
The Shure MV7, placed for a room you have not treated
The Shure MV7 records a dynamic element type and a cardioid pickup pattern described as unidirectional. A dynamic element is less sensitive to the room around it than a condenser, so it is the microphone of the two to reach for when the space has not been treated. That is an interpretation of the recorded element type rather than a measurement, because no sensitivity figure is recorded for either microphone.
Its recorded connection is USB and XLR, and XLR output appears in its recorded feature list. That is what leaves the option of moving to an audio interface later without buying a different microphone, and it is why it takes the first position in a list that is otherwise about a single USB cable.
The Blue Yeti, placed for the most flexible patterns
The Blue Yeti records a condenser element and four selectable pickup patterns: cardioid, bidirectional, omnidirectional and stereo. Switchable pickup patterns appear in its recorded feature list, and its recorded connection is USB, with headphone monitoring recorded as built in.
It is second because the recorded pattern list is the only specification in this catalogue that lets one microphone change what it listens to. A microphone that can be pointed at a single voice and a microphone that can also be pointed at a room, at two sources or at a stereo pair are not doing the same job.
Where the trade-offs sit
The trade-offs run in both directions. The Yeti's condenser element captures more of the room, which is why its recorded intended user is someone recording in a quiet room, and the MV7's single cardioid pattern is its recorded limit. The Yeti's recorded connection is USB only, so the upgrade path to an interface that the MV7 offers is not open to it.
Headphone monitoring does not separate them. Both record built-in headphone monitoring, so neither needs a separate monitoring path to hear yourself while recording, and neither can be distinguished from the other on that basis.
What this catalogue cannot settle
The catalogue records no sensitivity, no self-noise figure, no frequency response, no gain range and no price for either microphone, and it records no measurement of how either one handles a noisy room. Those are the figures that would settle a choice made purely on specifications. What the catalogue does settle is the shape of the choice: a dynamic element that forgives an untreated room, or a condenser with switchable patterns in a quiet one. If you record in an untreated room, the order on this page holds. If you record in a room you have treated, it does not, and the pattern list becomes the more useful criterion.