The Vedas are supposed to be most supreme text of Hindus along with the Gita. There are 4 Vedas.
The number of verses in the Rig Veda total 10800
The Number of verses in Atharva Veda total 5987
The Number of verses in Yajur Veda total 2000
The number of verses in Sama Veda total 1875
Therefore, length of Vedas = 10800 + 5987 + 2000 + 1875 = 20662
Length of Qur’an = 6346
Ratio = Length of Vedas / Length of Qur’an = 3.255
The Qur’an is thrice as small as Vedas. When muslim scholars take a lots of time to learn Arabic, memorise Qur’an,read hadiths, do you believe they can learn Sanskrit, or even if not, read such big Vedas, interpret them, and present it? Some people who get money do this, for them, they just vomit whatever they get on hand without giving it a thinking. Imagine, Upanishads, Puranas, Bhagavad gita,etc. when put together will take a lifetime to read and understand them.