"にすぎない" vs "だけ" and "にかぎらない" vs "だけじゃない"


I am having difficulties to make sense of `にすぎない`, which is translated by
EDICT to mean "no more than that; just; only". Is it not simply equivalent to
`だけ`? Can I use `にすぎない` as substitute for `だけ`?

Also, since `かぎる` means "to be restricted", which is opposite of `すぎる` \- "to
go beyond", does it mean that `にすぎない` and `にかぎらない` are opposite of each other?
Can I use `にかぎらない` as substitute for `だけじゃない`?




So we are comparing:

  1. ～にすぎない vs. ～だけ (Test for equal)

  2. ～にすぎない vs. ～にかぎらない (Test for opposite)

  3. ～にかぎらない vs. ～だけじゃない (Test for equal)

* * *

In 1. we have `not exceeding ~` and `only ~`.

Lets say we have a number line from zero to ten.

> `not exceeding 5` are "0, 1, 2, 3, 4, 5".
>
> `only 5` is "5".

So ~にすぎない is not equivalent to ~だけ.

* * *

In 2. we have `not exceeding ~` and `not limited to ~`

Lets have a number line from zero to ten.

> `not exceeding 5` are "0, 1, 2, 3, 4, 5".
>
> `not limited to 5` are "0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10"
>
> (`limited to 5` are "0, 1, 2, 3, 4, 5".)
>
> Is `not exceeding ~` equal to the opposite of `not limited to ~`? Yes.
>
> Is `not limited to ~` equal to the opposite of `not exceeding ~`? No.

Now lets have random data that has no order and unsorted. Lets say I have "A,
Q, W, M, D, C, P"

> `not exceeding M` makes no sense anymore.
>
> `limited to M` is not "A, Q, W, M". It is instead just "M".
>
> `not limited to M` are "A, Q, W, M, D, C, P".
>
> Is `not exceeding ~` equal to the opposite of `not limited to ~`? N/A.
>
> Is `not limited to ~` equal to the opposite of `not exceeding ~`? N/A.

* * *

In 3. we have `not limited to ~` and `not only ~`

Lets have a number line from zero to ten.

> `not limited to 5` are "0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10"
>
> `not only 5` are "0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10"

Now lets have random data that has no order and unsorted. Lets say I have "A,
Q, W, M, D, C, P"

> `not limited to M` are "A, Q, W, M, D, C, P".
>
> `not only M` are "A, Q, W, M, D, C, P".

So ~にかぎらない is equal to ~だけじゃない

