Both are in good condition, the kr-11000 has even had its cabinet wood refinished. Both have had deoxit treatments. Don't think either has been recapped though.
Purely going by specs, the Kenwood is more powerful. For what it's worth.
And for the life of me I can't remember the SA amp to SX receiver numbering scheme.
I personally wouldn't concern yourself with the Pioneer numbering scheme to compare to the receivers. 80 watts of 1970's power per channel. 79-81 was classic Pioneer at its peak.. Only the 9800 above it.