jesus is only messenger and not god according to xtianity.similarly ''allah''means ''god''in arabic language.hindus call god as ''brahmam'' who is omnipotent,omnipresent,pervading in every object,a formless without any attribute. since it is difficult for common people to visualise a formless god,as per vedas,we cenceptualised in several manifested forms with names,forms and attributes and enjoying the freedom of praying god in any form we like as ishtadevata.sankara advocated advaita where god and man are same (both paramatha and jivathama are same and one) madhawacharya in his concept of dvaitha told god and man are seperate (jivathama and paramatha are different),ramanuja advocated in his visisha dvaita that man is part of god ( jivathama is part of paramathma).in short hindus enjoy freedom of choice and can choose any form or can be atheist also like charvaka/buddha who are still revered and glorified. for christians,if they do not pray to messenger they will be sent to hell and for allah,same fate for muslims.now u you know why hinduism still withstood all onslaught,attacks by other religions and still growing fast.