Let's look at this from a non Disney deluxe hotel perspective. Let's look at the nearby Four Seasons:
Discounts - Deluxe hotels are not immune from offering discounts. The Four Seasons offers a 4th free night with every 3-night stay; 25%. It also offers 20% off with 90-day advanced purchase.
Car rentals - The Four Seasons offers complementary theme park transportation. (What drives me crazy is the number of deluxe resorts that charge for parking!) However, I do believe you have to pay for transportation to and from the airport. Disney has Disney's Magical Express!
Theme park parking - not needed at the Four Seasons; see above.
I noticed that you selected the Wilderness Lodge, Disney's smallest room size (344 sq. ft.) and least expensive Deluxe Resort.
The Four Seasons rooms start at 500 sq. ft.
Let's use the more comparable Grand Floridian (440 sq. ft.). More than 10% smaller than the Four Seasons, but I'll cut the Grand Floridian some slack.
For a random weeknight in September, the Four Seasons starts at $499/night. The Grand Floridian starts at $574/night.
I'm not trying to be overly critical, only suggesting that you make a fair comparison.
And I am using the word "fair" loosely. Frankly, service at the Four Seasons puts the Grand Floridian to shame.