The 2GR has an extra liter of displacement. It starts off with a major head start from a performance perspective.That 2 gr is a venerable engine the a25 not so much
That said, the A25 with hybrid does 0-60 in 7.3 seconds* versus the 295hp 2GR (non-hybrid) doing 6.7 seconds in the Highlander. If you dive into fuelly, the V6 Highlander owners were typically between 21 and 23 mpg. The A25 owners get over 30mpg real world. That is an absolutely massive bump in efficiency for a rather small hit in performance.
I'm not going to pretend to know what Crown sedan owners value, but I've been to Japan enough times to know that fuel efficiency matters and high performance engines would largely be wasted in a car like the Crown in Japan. They don't have thousands of miles of open interstate where those big, smooth engines just eat up the miles. There's tons of traffic, tons of toll roads, and really expensive fuel. The A25 hybrid probably makes a ton of sense in a Japan market Crown sedan.
* From car and driver instrumented tests