It's probably true. There are some flavours that really are out and out smells rather anything else and to the carp are all the same. I've never done really well on strawberry, I don't like the taste or smell, it tastes and smells artificial to me, as a result I've rarely used it, so self perpetuating. A mate of mine did do really well on the old Strawberry, cream and bergamot mix.
I used to go through the flavour shelf at work, mostly Nutrabaits, and many tasted the same, raspberry, strawberry, cranberry.
Then we have others I have done really well on, Megaspice, Ultraspice by Hutchy, Peach Nutrafruit, Liver Elite, and a few more.
They look good.