I still think Chalkpit is worse, from memory. The severity of climbs is about more than steepness alone.
I'd agree - Chalkpit is a beast - first time I went there with a few friends we got a bit lost and ended up in a nearby housing estate and had to stop and ask an old boy for directions - "you boys don't want to go that way" he said "its 1 in 4 you know". Heh. Titsey is nothing in comparison.