There is very much not a correlation between current capacity and service life in cycles or years. Ultra high current LiPo packs used in drones and by RC cars etc, good for 30-50C or more, can have quite frankly a garbage service life. The ones my coworkers use are allegedly pretty high end batteries in that area, but they still frantically discharge them when done to store them at a storage voltage because they shit the bed and die from being stored full for even a few weeks. They still end up with puffy cells contained by the heatshrink pretty often. I would normally scrap a lipo cell with any hint of puff, but that would probably limit those to <5 cycles
That and I don't feel like arguing any more with the pig-headed ME whose pet project it is, and they aren't keeping their box of fire hazards in my building.
So the batteries there are extremely optimized for high current output, and being low cost. Everything else is very much secondary. And apparently that is a good approach for the market they serve.
Now obviously not all high power cells are like that. Power tool 18650s very much last longer than a few dozen cycles. So it all comes down to the secret sauce added during cell construction, and what the batteries were optimized for.
For your hypothetical 30A vs 10A cell, since nether will be particularly near their rating at 5A, and presumably the 10A cell is higher capacity, at a fixed mAH discharge amount, the 10A cell may last longer, with the depth of discharge percentage being lower.