Bearing "looseness" is hard to judge. Some resistance can be indicative of a tight tolerance bearing which will not wobble, and that is good. A bearing that spins very freely can also have some slop in it, and that is not good. Bearings break-in over time. Especially when new, bearings are usually packed with grease, some of which can (unless they are sealed) work its way out as the bearing breaks in.
There is also the leverage factor to consider. Speedplays, for example, may seem harder to spin than a pedal like a Look, as your are pushing on a longer lever when you push on the end of a Look vs. Speedplay. There is also the question about the total number of bearings and what kind.
If you are worried, see if other pedals of the same brand spin easier that your "resistant" pedals. But remember, your fingers/hands are not exact measuring instruments. Unless it really feels tough to spin, I wouldn't worry.
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