Hi Washpci,
Thanks for letting us know what you ended up deciding and for taking the time to share some of your initial comments and feedback as well.
You certainly made a great quality/value choice … and congratulations on your new mattress 
This could be because subjective memory for firmness tends to be somewhat inaccurate over time (it’s more accurate to make side by side comparisons in real time), because the Savvy Rest configuration is actually a little firmer than your SleepEz configuration, or because the Savvy Rest mattress has been broken in among several other reasons as well. While the Savvy Rest mattresses are “similar” to SleepEZ … they aren’t exactly the same.
This is true although some people may notice a difference and some won’t because the difference in a 3" layer wouldn’t be a lot.
There are probably other ways that would be more noticeable or effective that you can use to change the comfort or support of your mattress if that were to become necessary but it’s certainly possible to flip the layers if you wish to see if it makes a difference that you can feel. If there is still a label on any of the layers then you could tell which was the top and bottom based on which way was right side up on the label but other than that you would need to go by “feel”. If you can’t feel a difference between one side or the other with the layer on the floor then it probably wouldn’t be worth flipping it.
That would depend on the specific ILD of each layer you were comparing. A medium Talalay that was in the 30 - 32 range would probably feel firmer for most people than most “soft” Dunlop layers that are in the low 20’s. Softer layers in general will be more “cradling” than firmer layers and with two layers that are the same ILD Talalay will tend to be more cradling than Dunlop because it has a lower compression modulus (the rate that a material becomes firmer as you compress it more deeply).
Again you may be speculating about making more “finely grained” changes or predictions than is necessary or even possible because different people can have different opinions about how they may compare. There is more about how Dunlop compares to Talalay in post #7 here but if you need to make any changes I would tend to stick with more basic changes based on your actual experience on the mattress over the coming weeks as your mattress breaks in a little and as your body adjusts to the feel of a sleeping surface than it’s used to (see post #3 here).
In the first few weeks of sleeping on a mattress I would tend to avoid too much speculation about potential changes that may or may not be necessary down the road and if and when any changes may be necessary I would use your actual experience along with a conversation with SleepEZ to decide on the type of changes that would have the best chance of success rather than basing them on “theory” that can quickly lead to information overload.
No it won’t hurt the mattress although I would be cautious about using a soft layer on the very bottom of a mattress. A firmer layer on top of a softer layer is what I call a dominating or dominant layer and there are certainly people that prefer it over the more “typical” progressive approach where the softer layers are on top of the firmer layers. There is more about dominating layers in post #33 here and the posts it links to.
Phoenix