If you add together all the phones, tablets, routers, set top boxes, Smart TVs, single board computers etc with an ARM licensed chip inside, this would mean the number of ARM chips sold per year way outstrips the number of Intel chips sold. According to Wikipedia there were 15 billion ARM based chips sold in 2015, Intel don't release figures for the number for chips it sold per year but it is not going to be anywhere near the 15 billion mark.
To work out which market is bigger you would need to add up the profit made by ARM plus the profit from sales of ARM based chips from all ARM licensees such as AMD, Broadcom, Huawei, Nvidia, Qualcomm, Samsung, Mediatek, Rockchip etc. Apple are also an ARM licensee but don't sell chips to others so it would be hard to quantify what revenue they gain from being a ARM licensee.
Then compare this to the profit Intel makes from selling X86 compatible CPUs over the same period.