1.
But do you have Jacobs ahead of Kamara in your rankings? That's what matters.
Is Jacobs a top 10 overall pick in non-PPR? I think yes. Do I have him ahead of Kamara in non-PPR? I don't, but it's extremely close based on what they each did last year, and with some reports that Jacobs could see an increased utilization this year in the passing game, you can see why some may shift him up their rankings.
They both had about the same stats last year - 1300 yards and 6-7 TDs - the only difference is Kamara had 60 more receptions - that is irrelevant to non-PPR (but is why Kamara is usually several slots higher in PPR rankings). I don't know of any significant changes to either's situation (other than the aforementioned chance Jacobs sees some increased utilization), but I do not expect a seismic change in production for either of them.