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Not necessarily. 3.5 and 5mm are same as the shorter LVW focal lengths. From there it makes a lot of sense to step up using a ratio of 1.4x from one to the next as they have done.
What's annoying is that they stopped short - IMHO they need two more at 21 and 30mm to make it an attractive set over Naglers or the ES eyepieces.
The size of the shorter ones and constant eye relief imply they used a Smyth lens design pretty much as they did with the LVWs - do not assume they copied Televue.
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