What happen with cells with different current rating put in parallel?
If we use two cells of the same type build with narrow tolerances connected in parallel the current will distribute equally to both cells. The capacity, voltage and internal resistance are the same for both cells. If the charge state and the cell temperature are the same we may assume the total current is shared in a 50 % ratio.

But if we use different cells with different capacity and rated current and unknown internal resistance we don't know how the current is shared.

Can you tell us more about those two cells, what about capacity and internal resistance? A datasheet would be helpful.

Cells may be optimized in different ways, for high current and a little more weight or large capacity with small weight and low current. This would result in a low internal resistance for the first cell and higher resistance for the second.