Peace Mr. Popat
So in addition to claiming that we make Isa (AS) immortal you also say as a result of this 'i.e. giving him a very long life span' we are making Isa (AS) more important than Muhammad (SAW).
To answer this part is simple: 1) We have no reference making Isa (AS) more important than Muhammad (SAW) and neither do we hold such a view in our aqeedah.
2) If we are appointing more importance unwittingly according to your criteria of 'longevity of life' then we say there are some Sahabis who outlived Muhammad (SAW) they were born before him and died after him, would they too be more important according to your criteria of importance?
Just a small note, according to Ahamdi belief Isa (AS) survived the cross and lived in the East, did he not live to an age past 100 years? Since he lived longer than Muhammad (SAW) (i.e. greater than 63 years) was he not according to your criteria more important than Muhammad (SAW)?
Anyway ...
So according to us longevity of life is not a factor of importance and hence Isa (AS) may live as long as Allah (SWT) Wishes what will happen will happen and Isa (AS) will return to die, hence he is not immortal and no promise of immortality has been given to him.
According to you since we believe Isa (AS) has lived on until today he is being made to have more importance than Muhammad (SAW) and hence we are wrong and in addition the verse is contradicted because it is evident to you that a person who is still alive today has been granted immortality.
So really to condense the subject down I would like to make a clean point of difference then move to your next presented ayahs. I will not conclude either way and leave it for the audience to decide.
Ahmadi: Immortality is defined by an unusually high number of years beyond normal human existence, irrespective of the promise of death.
ASWJ: Immortality is defined by someone who is not destined to die.
Ahmadi: It is deemed of greater importance to be living for many thousands of years than a mere normal human life.
ASWJ: Age length does not determine importance, rather importance is defined in Qur'an and hadith and that is how it is accepted.
One can live for as long Allah wishes. The problem here is Him coming back to Earth to get death, when in heavens only people who are dead goes. It is evidence enough that you hold Esa AS to be more superior than Muhammad PBUH since He AS was the only one who was taken up to heavens alive because Allah couldnt see him in pain, but we see no instance such as this happening with the greatest prophet of all time, the holy prophet PBUH. I just want to see to what extent you can go just to keep him alive.
PS: I asked a question earlier, will he be born again or not?.. also, if being in heavens stops his age at the point when he AS was taken up? Is he AS 2000+ years old at the moment? this is a serious question, and requires a serious answer, because with your answer, ill be quoting verses of Quran yet again for you and the audience here to look at.
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21:08 (09 for some).. "And We did not give them bodies that ate no food, nor were they to live for ever"
25:21 ( 20 for some )..And We never sent any Messengers before thee but surely they ate food and walked in the streets. And We make some of you a trial for others. Will you *then *be steadfast? And thy Lord is All- Seeing.
So you want me to deal with these now?
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Please go right ahead. Keeping in mind Prophets were subjected to hunger, pain, sleep etc..