Blade gap is a useful specification, but it is not a universal scale of shaving aggression. A razor with a larger published gap can feel different from another model with a smaller gap because the rest of the head geometry changes how the blade meets your skin.
What blade gap describes
In common razor specifications, gap describes the clearance between the blade and the baseplate near the guard. It is usually quoted in millimetres. Keep the manufacturer's measurement method in mind: a number without a diagram or definition may not be directly comparable with another maker's figure.
Gap is particularly useful when comparing intended baseplates within one razor family. Even then, changing the plate can change more than one aspect of blade presentation. Treat the number as a description of that configuration, rather than a guaranteed result on your face.
What blade exposure describes
Imagine a line touching the cap and guard in a cross-section of the assembled head. Exposure describes where the blade edge sits relative to that reference. Positive exposure puts the edge beyond it, neutral exposure puts it on it, and negative exposure sets it behind it.
This is a geometric reference, not a claim that skin remains flat while shaving. Pressure, shaving angle and the space between the edge and guard also affect contact. Blade dimensions can vary, so a manufacturer may describe exposure as a range or qualify it by the blade used.
Reading Alpha specifications in context
Both the titanium and 316L stainless steel Outlaw Evolution list a 0.70mm gap. The Eclipse lists a 0.80mm standard plate and a 0.95mm Plus plate. Those figures identify the products and options; they do not establish a cross-model ranking for comfort.
The Futura Fatty lists a 0.80mm gap and describes exposure as neutral to slightly positive depending on the blade. The Spirit SE lists a 0.90mm gap and positive exposure dependent on the compatible Artist Club style blade fitted. Spirit uses a different blade format from these DE models, which makes a gap-only comparison especially unhelpful.
Use specifications to narrow your questions
Are the figures for the same razor model, blade format and baseplate?
Does the maker state exposure as well as gap?
Is the blade clamped and seated as intended?
Are you also changing the handle, blade brand or shaving routine?
What do you actually want to change: blade feel, handling or the number of strokes you need?
When trying a different configuration, keep your blade and preparation familiar and use light pressure. Compare the feel and result over several ordinary shaves rather than drawing a conclusion from one rushed pass. Stop if it feels uncomfortable; a higher number is not a target to work towards.
Use only baseplates intended for your razor. Shims, mismatched components or a loosened handle change the designed assembly and are not substitutes for a properly specified option.