This route really has two variations, but they are considered different routes using the same bolts. The harder variation goes straight up on thin holds and is rated at solid 5.12. The route associated with the name "Tottering into Antiquity" goes right at the sixth bolt and attempts to maintain a contrived line that allows you to clip the bolts, but it does NOT go into the route "Chip Off the Block
". These efforts alone afford the 5.10 rating. The only saving grace for this route is that the rock quality is high. You might as well just do "Chip Off the Block
" though. The 5.12 variation looks HARD.