Acids and bases have various strengths, all depending on their pH. An extremely strong base would be more dangerous than a weak acid, and vice versa.
For example, oven cleaner, with a pHof 14 (highest possible level on the scale) would cause much more damage upon direct contact then would soda water, for example, a weak acid of pH6.
It is true that acids cause degradation on metals and alkaline products don't, but that is no measure of their strengths.
Whenever dealing with acids and bases always measure their pH, if you don't already know it. Never touch without knowing for sure. Never smell without knowing for sure and always handle with care. Spilling a strong acid or base can have severe consequences, including painful burns, and, if there is contact with the eye, potential vision loss or even blindness.
