I like my 12 to be a good defensive player who has power to get over the gain line and I like my 13 to be quick who runs great lines. This is why I love the Quins centre pair, for me the perfect combination.
I agree with this entirely.
I was always told that a 12 should typically be the best tackler / defensive positioning because they will often have to help cover the 10 channel too.
That then means you want your pace and step to come from 13, as well as running support lines.
I think Wilkinson and more recently Farrell as hard hitting 10s has changed this perception a lot.
There's also been a number of other 10s in the modern game who tackle well.
However on the whole, these still feel like edge cases.
The majority of fly halfs are still iffy when a big ball carrier is running at them.
There's also the fact that you don't want your 10 buried in a ruck if you're a team that's likely to make turnovers.
That all being said, a solid defensive pattern is probably far more important than individual tacklers.
We seem to sometimes look like we know exactly what we're doing in defence and other days it's as though it's a completely new concept