Redis is in the AOF configuration as durable as your MySQL InnoDB store. This has nothing to do with durability :)

*only if you use the appropriate fsync options. By default, AOF is set with the equivalent of innodb_flush_log_at_trx_commit=0 (fsync every second.) Note that the equivalnt of sync_binlog is always 0. Usually, this is just fine, but it is important to note when comparing MySQL to InnoDB.