At some point, if you could share the product so that we are not just offering hypothetical feedback that would ensure we give you a full rounded set of feedback.
That aside, yes, the data and numbers look sound. And you will always get slightly different numbers from H10 and JS – they are different 3rd party tools. There will be a margin of error with most 3rd party sales data, so just stick on one and consider they will both be slightly off (+ or -)
Whichever you decided, just use one data source for Product Research. Additionally, in some categories, we are seeking quite a bit of movement of large sellers coming in and out of stock which changes the view of the competitor landscape. So you may like to check the JS / H10 numbers a few times before you ‘press the button’ on an order. If you can take sales table screenshots, then you can see if the numbers change and WHY (i.e: which sellers are influencing the change).
(maybe this could have happened with the H10 and JS results?)