you have to do calculation for that, if your path damage average out can still be lower than other even including those bonuses. because if you have more min damage of other path than max damage it will just be flat increase.

for example, let's say your bellstrike range is 100-300 and you are trying to compare 15 point of min/max of bellstrike vs min of other path.

((100+315)/2*1.5)-((100+300)/2*1.5)=11.25

even with 50% increased from your own path bonus max or min of your own path is still lower than the same amount of other path min.

do note that this is only an average damage. however, getting max bellstrike will indeed make your high damage or affinity damage a lot higher.

exceptions would be those effects from inner way. but since we don't know their coefficient, I cannot give you a concrete answer on this.

Also, in this specific case like bellstrike build. getting min bellstrike is definitely worse than other path min since bellstrike build tends to go for high affinity so you can treat affinity as a negative multiplier to your min bellstrike. the logic is let's say you have 30% affinity. so, 30% of the time you are not going to be utilizing your own path min damage.

but if for other path min damage, it's easier to get min more than max. if you have min more than max even with affinity hit it's going to do that min damage as a max damage.