Is there a way to return accurate api response time?

Question

After navigating to a page, how can I get the response time of 10 APIs that would have been called? I want the time to be accurate as shown in the network tab- to test the performance sanity.

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I have tried the playwright's offering https://playwright.dev/docs/api/class-request#request-timing but the response time given by playwright and network tab is different.

    const waitForResponseOfXXX = page.waitForResponse(
        '**/prism/?op=XXX'
    );

    await page.goto(
        'https://testing.com'
    );
    const xxxResponse = await waitForResponseOfXXX;

    let timings = await xxxResponse.request().timing();
    console.log(
        `xxxResponse:` +
            (timings.responseEnd - timings.responseStart)
    );